SidorenkiteNa3Mn(PO4)(CO3)

Sidorenkite is extremely rare at MSH.

PHYSICAL CHARACTERISTICS:

Color is usually colorless to pale pink, pale brown to reddish brown.Luster is vitreous to pearly.Diaphaneity is transparent to opaque. Crystal System is monoclinic, P21/m.Crystal Habits include globular grains and embedded rectangular crystal sections that are etched.Cleavage {100} and {010} are perfect.Fracture is (??).Hardness is 2.Specific Gravity is approximately 2.9 g/cm3.Streak is white.Associated Minerals include cancrinite, eudialyte, kogarkoite, lovozerite, rasvumite, sérandite, sodalite, terskite, tugtupite, ussingite, villiaumite and vuonnemite.Distinguishing Features: Crystal habit.Origin: Named in 1979 after Alexander Vail'evich Sidorenko (1917-1982), Russian.